Rotary-bottom boat.



I. B. MAFTLNG.v

ROTARY BOTTOM BOAT.

APPLICATION man ocT.s,`19T1.

1,258,428. Bamm Mar. 5,1918.

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JOHN BOYCE MABLING, OF HATTON, ARKANSAS.

ROTARY-BOTTOM BOAT.

Application led October 6, 1917.

To all whom it may concern.'

Be it known that I. JOHN B. MAnLiNG, a citizen of the United States, residing at Hatton, in the county of Iolk and State of Arkansas, have invented certain new and useful Improvements in Rotaryn Bottom Ioats, of which the following is a specification.

This invention relates to boats, and has for its object, to provide a boat so constructed that the resistance of the water will be reduced to a minimum, so that with a given amount. of power a much greater speed can be obtained than has heretofore been possible'with the type 0f boats commonly emv ployed.

A further object of the invention is to provide a boat which will be practically unsinkable.

Further objects and advantages of the invention will be set forth more fully in the detailed description which now follows.

In the accompanying drawing:

Figure l is a side elevation of a boat constructed in accordance with the invention with a part thereof broken away.

Fig. 2 is an underside plan view of the boat.

Fig. 3 is a transverse, vertical section through the boat.

Fig. 4t is a transverse vertical section illustrfping a slightly modified form of boat an Fig. 5 is a detail sectional view of one of the buoyant receptacles employed in conjunction with the boat.

Like numerals designate corresponding parts inall of the figures of the drawing.

Referring to the drawing the numeral 5 designates the body of the boat, and 6 the bottom thereof. It is to be understood that this body may be of any depth, size, or shape, because the invention resides more particularly in the buoyant means by which the body is supported than in the particular form of body.

Longitudinally extending members 7, lt5 and 9 carry two part bearings 10, 11 and 12, in which spindles 13 of barrel like receptacles 14, are mounted to rotate. These receptacles are water tight and consequently highly buoyant, and they serve as the supporting .means for the body. A propeller 15 or other suitable driving medium is employed for Jfurnishing motive power to the boat.

Specification of Letters Patent.

Patented Mal'. 5, 1918.

Serial No. 195,065.

It is to be noted that in the form of the invention illustrated in Figs. 1, and 2, two rows of buoyant receptacles are employed throughout the major portion of the length of the boat and that adjacent the bow of the boat, a single wider receptacle 16, is mounted in bearings 17, and that at the extreme forward portion of the boat, or at that part constituting the bow, a narrower and deeper receptacle 19 is provided, they spindle 20 of which is journaled in bearings 21. All ot' the receptacles are preferably made of barrel shape, that is they, taper in opposite directions from the center line thereof. This does not in any way interfere with the function to be performed by the said receptacles as rolling supports for the boat while at the same time it adds stability to the boat and prevents the boat from making excessive leeway when the wind is blowing.

One of the receptacles is shown in section in F ig. 4. I preferably provide in one of each of thel receptacles a plug 22, which constitutes a removable closure so that if any of the receptacles should leak and become filled or partly filled with water, it would be possible by removing the plug 22 to pump the water out of said receptacle and by then turning the punctured part of said receptacle to the top and tightening down on the bearing of that particular receptacle so that it could not rotate in its bearing, such a receptacle would still serve as a buoying medium for the boat, and maintain the proper trim thereof, though of course, until the leak was repaired such receptacles would not be capable of rotation.

In Fig. 3 I have illust-rated a slightly modified form of the invention adapted for use on larger boats and in rougher water than the form shown in Figs. 1, 2 and 3. In this case I preferably employ three rows of receptacles 141, 14", 14"', and I make. the central row larger in diameter to give* the boat greater draft at the center line thereof. This increases its stability because the center line of receptacles has the effect of a keel. The purpose of making the foremost receptacle 19 larger in diameter than the remaining receptacles in Figs. 1 and 2, is to cause it to set deeper in the water, and cause this receptacle to act as a prow or pilot and to decrease the power ot the waves against the bow of the boat.

lt is to be understood that this invention is not limited to the precise construction set.

forth, but that it contemplates the making of receptacles of any suitable size, or proportion, or shape. llt is apparent that within certain limits the larger the receptacle the better, and it is to be umlerstood that the invention includes within its purview what ever changes fairly come within the spirit of the appended claims.

Having described my invention what l. claim is:

l. A boat construction comprising a body portion and a plurality ot' barrel shaped, rolling, buoyant receptacles which complementally are of such cubic capacity as to support said body portion by their buoyancy and provide a rolling mounting for said body portion.

2. A boat comprising a body portion, a plurality o hollow buoyant rotative recepmea/lea tacles upon which the body is supported, each of said receptacles being of barrel shape, and an independent propelling means for the boat.

A boat comprising a body portion, a plurality ot rotative buoyant receptacles for supporting' the saine; said receptacles being' disposed in a plurality ot' rows throughout the inajor portion of the length of the boat and there being one of said receptacles disposed at the bow of the boat and at the longitudinal center line of the boat, said last named receptacle being larger in diameter than the others ot' said receptacles.

ln testimony whereof I aliix my signature in the presence of two witnesses.

JOHN BUYCE MARLllNG.

Witnesses:

W. H. DUNEL, W. l). Srr'roN; 

